Members of a sub-group of Toronto FC supporters were escorted out of Ottawa’s TD Place Stadium after they set off a blast, ignited a fire in the stands and threw a flare onto the field during a game against Ottawa Fury on Wednesday night.

The group was sitting on the north side of the stadium, in a section that is normally used by away fans.

The fireworks were not found despite supporters having their bags checked as they entered the venue.

Toronto FC has apologized for their fans’ behaviour, the statement said.

Ottawa Police are investigating the incident.

“Public safety is of paramount importance and TD Place will review this incident and security policies to determine how they might be modified to prevent such incidents in the future,” the statement added.

Keenan Wellar was watching the game from his 16th floor apartment above TD Place Stadium when the blast went off.

He said he doesn’t recall a scene like that one at a Fury game in the past.

“One of them managed to set their own supporter flag on fire, which was quite a large flag,” he told Global News.

Wellar said the Ottawa Fury, who play in the United Soccer League (USL), which is considered a tier below Major League Soccer (MLS), appeal to a family-centered crowd and normally don’t even play games in the evenings.